getNeighbour.js

const getNeighbour = (pipesInposition, directionPipe) => {
    let indexNextPipe = -1;
    const posibleDirections = [
      [[2], [2], [1, 2, 3], [1, 2], [0, 2]],
      [[3], [3], [0, 2, 3], [2, 3], [1, 3]],
      [[0], [0], [0, 1, 3], [0, 3], [0, 2]],
      [[1], [1], [0, 1, 2], [0, 1], [1, 3]]
    ][directionPipe];
    if (pipesInposition.length !== 0) {
      for (let indexPipe of pipesInposition) {
        //Buscar si existe un posible conector...
        const conectorExpected = posibleDirections[
          actualWorld[1][indexPipe][2] - 1
        ].indexOf(actualWorld[1][indexPipe][3]);
        if (conectorExpected >= 0) {
          indexNextPipe = indexPipe;
          break;
        }
      }
    }
    return indexNextPipe;
  };